Supersnelle erbijsommen en erafsommen tot 20
In de mix
|
1.
6 + 11 =
3
2
4
17
|
2.
6 + 5 =
1
11
2
3
|
3.
17 + 0 =
17
2
3
4
|
4.
16 + 1 =
4
17
3
2
|
|
5.
4 – 2 =
2
4
3
1
|
6.
20 – 15 =
1
2
5
3
|
7.
20 + 0 =
3
2
20
4
|
8.
9 – 6 =
3
1
4
2
|
|
9.
7 – 2 =
1
2
3
5
|
10.
7 + 9 =
3
2
4
16
|
11.
18 + 2 =
20
4
2
3
|
12.
12 + 6 =
4
3
2
18
|
|
13.
6 – 4 =
3
1
2
4
|
14.
7 – 1 =
3
6
2
1
|
15.
19 + 0 =
4
19
2
3
|
16.
12 + 7 =
2
19
4
3
|
|
17.
17 + 1 =
18
3
4
2
|
18.
14 + 1 =
15
2
3
1
|
19.
12 + 3 =
1
2
15
3
|
20.
16 + 4 =
20
4
2
3
|